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A242.0 Aluminum vs. 240.0 Aluminum

Both A242.0 aluminum and 240.0 aluminum are aluminum alloys. They have a moderately high 91% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is A242.0 aluminum and the bottom bar is 240.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
72
Elongation at Break, % 1.6
1.0
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
27
Tensile Strength: Ultimate (UTS), MPa 220
240

Thermal Properties

Latent Heat of Fusion, J/g 390
380
Maximum Temperature: Mechanical, °C 210
180
Melting Completion (Liquidus), °C 680
600
Melting Onset (Solidus), °C 550
520
Specific Heat Capacity, J/kg-K 870
860
Thermal Conductivity, W/m-K 140
96
Thermal Expansion, µm/m-K 23
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
23
Electrical Conductivity: Equal Weight (Specific), % IACS 110
65

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 3.1
3.2
Embodied Carbon, kg CO2/kg material 8.3
8.7
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1100

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 45
43
Strength to Weight: Axial, points 20
20
Strength to Weight: Bending, points 26
26
Thermal Diffusivity, mm2/s 52
35
Thermal Shock Resistance, points 9.3
11

Alloy Composition


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Aluminum (Al), % 89.3 to 93.1
81.7 to 86.9
Chromium (Cr), % 0.15 to 0.25
0
Copper (Cu), % 3.7 to 4.5
7.0 to 9.0
Iron (Fe), % 0 to 0.8
0 to 0.5
Magnesium (Mg), % 1.2 to 1.7
5.5 to 6.5
Manganese (Mn), % 0 to 0.1
0.3 to 0.7
Nickel (Ni), % 1.8 to 2.3
0.3 to 0.7
Silicon (Si), % 0 to 0.6
0 to 0.5
Titanium (Ti), % 0.070 to 0.2
0 to 0.2
Zinc (Zn), % 0 to 0.1
0 to 0.1
Residuals, % 0 to 0.15
0 to 0.15